Abstract: An incubator for storing blood platelets is provided. The incubator has a temperature controlled storage compartment and an apparatus for monitoring temperature within the storage compartment and other events. The incubator is configured to accept agitators within the storage compartment, the agitators operable to provide constant agitation of materials stored thereon. The information monitored is stored for access through a user interface or by an independent computer.

Abstract: A freezer for the storage of blood plasma and other blood products includes a user interface device which permits a user to adjust operating parameters of the freezer. The user interface device is operable to display the current status of the freezer. A defrost icon is displayed when the freezer is in defrost mode. The user interface device a graphical representation of the temperature within the freezer over the previous twenty-four hours. The controller of the freezer stores temperature related events which can be displayed on the user interface device or downloaded to a remote computer.

Abstract: A photo-electronic internal combustion ignition system in which a shutter rotated by the distributor shaft of the engine alternately supplies and cuts light from a photodiode to a photo-electric pickup. The circuit is devised to produce an exceedingly rapid cut-off of current to the engine induction coil, and for this purpose an amplifier following the pickup has a connection to the photo-diode which as soon as the pickup receives a predetermined minimum amount of light via the shutter, momentarily pulses the photo-diode so that the latter produces a short flash of high intensity light. Induction coil cut-off occurs when the photo-diode receives this light flash.